From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-f180.google.com (mail-ob0-f180.google.com [209.85.214.180]) by kanga.kvack.org (Postfix) with ESMTP id 971526B0038 for ; Thu, 2 Apr 2015 03:17:57 -0400 (EDT) Received: by obbgh1 with SMTP id gh1so110344469obb.1 for ; Thu, 02 Apr 2015 00:17:57 -0700 (PDT) Received: from mail-ob0-x22c.google.com (mail-ob0-x22c.google.com. [2607:f8b0:4003:c01::22c]) by mx.google.com with ESMTPS id y9si4231553oem.106.2015.04.02.00.17.56 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 02 Apr 2015 00:17:56 -0700 (PDT) Received: by obbgh1 with SMTP id gh1so110343981obb.1 for ; Thu, 02 Apr 2015 00:17:56 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20150401215950.GC4027@n2100.arm.linux.org.uk> References: <20150327002554.GA5527@verge.net.au> <20150327100612.GB1562@arm.com> <7hbnj99epe.fsf@deeprootsystems.com> <7h8uec95t2.fsf@deeprootsystems.com> <551BBEC5.7070801@arm.com> <20150401124007.20c440cc43a482f698f461b8@linux-foundation.org> <7hwq1v4iq4.fsf@deeprootsystems.com> <20150401215950.GC4027@n2100.arm.linux.org.uk> Date: Thu, 2 Apr 2015 09:17:56 +0200 Message-ID: Subject: Re: [PATCH] mm/migrate: Mark unmap_and_move() "noinline" to avoid ICE in gcc 4.7.3 From: Geert Uytterhoeven Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Russell King - ARM Linux Cc: Kevin Hilman , Andrew Morton , Marc Zyngier , Ard Biesheuvel , Will Deacon , Simon Horman , Tyler Baker , Nishanth Menon , Arnd Bergmann , "linux-sh@vger.kernel.org" , Catalin Marinas , Magnus Damm , "grygorii.strashko@linaro.org" , "linux-omap@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Linux Kernel Development , "linux-mm@kvack.org" Hi Russell, On Wed, Apr 1, 2015 at 11:59 PM, Russell King - ARM Linux wrote: > On Wed, Apr 01, 2015 at 02:54:59PM -0700, Kevin Hilman wrote: >> Your patch on top of Geert's still compiles fine for me with gcc-4.7.3. >> However, I'm not sure how specific we can be on the versions. >> >> /me goes to test a few more compilers... OK... >> >> ICE: 4.7.1, 4.7.3, 4.8.3 >> OK: 4.6.3, 4.9.2, 4.9.3 >> >> The diff below[2] on top of yours compiles fine here and at least covers >> the compilers I *know* to trigger the ICE. > > Interesting. I'm using stock gcc 4.7.4 here, though I'm not building > -next (only mainline + my tree + arm-soc) and it hasn't shown a problem > yet. Mainline doesn't fail. > I think we need to ask the question: is the bug in stock GCC or Linaro > GCC? If it's not in stock GCC, then it's a GCC vendor problem :) Can you please try -next (e.g. next-20150320)? make bockw_defconfig make mm/migrate.o Thanks! Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org